/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * Copyright 2011, Blender Foundation.
 */

#include "COM_MovieClipAttributeOperation.h"
extern "C" {
#include "BKE_tracking.h"
#include "BKE_movieclip.h"
}
MovieClipAttributeOperation::MovieClipAttributeOperation() : NodeOperation()
{
  this->addOutputSocket(COM_DT_VALUE);
  this->m_framenumber = 0;
  this->m_attribute = MCA_X;
  this->m_invert = false;
}

void MovieClipAttributeOperation::initExecution()
{
  if (this->m_clip == NULL) {
    return;
  }
  float loc[2], scale, angle;
  loc[0] = 0.0f;
  loc[1] = 0.0f;
  scale = 1.0f;
  angle = 0.0f;
  int clip_framenr = BKE_movieclip_remap_scene_to_clip_frame(this->m_clip, this->m_framenumber);
  BKE_tracking_stabilization_data_get(
      this->m_clip, clip_framenr, getWidth(), getHeight(), loc, &scale, &angle);
  switch (this->m_attribute) {
    case MCA_SCALE:
      this->m_value = scale;
      break;
    case MCA_ANGLE:
      this->m_value = angle;
      break;
    case MCA_X:
      this->m_value = loc[0];
      break;
    case MCA_Y:
      this->m_value = loc[1];
      break;
  }
  if (this->m_invert) {
    if (this->m_attribute != MCA_SCALE) {
      this->m_value = -this->m_value;
    }
    else {
      this->m_value = 1.0f / this->m_value;
    }
  }
}

void MovieClipAttributeOperation::executePixelSampled(float output[4],
                                                      float /*x*/,
                                                      float /*y*/,
                                                      PixelSampler /*sampler*/)
{
  output[0] = this->m_value;
}

void MovieClipAttributeOperation::determineResolution(unsigned int resolution[2],
                                                      unsigned int preferredResolution[2])
{
  resolution[0] = preferredResolution[0];
  resolution[1] = preferredResolution[1];
}
